CHANGELOG.md in sniffer-0.3.2 vs CHANGELOG.md in sniffer-0.4.0

@@ -1,4 +1,9 @@
+## 0.4.0 (March 19, 2020) ##
+
+* Added middleware support
+
+
 ## 0.3.2 (January 12, 2018) ##
 
 * Fix EventMachine::HttpClient not defined in Thin
 
 ## 0.2.0 (January 8, 2018) ##